5AT(diag)-79
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
6
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Jack-up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain the ATF until it cools down.
6) Remove the oil pan, and disconnect the
control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T4) No. 16 — (T11) No. 10:
(T4) No. 10 — (T10) No. 9:
Is the resistance less than 1
Ω?
Replace the trans-
mission assembly.
<Ref. to 5AT-38,
Automatic Trans-
mission Assem-
bly.>
Repair the open
circuit of harness
between control
valve body con-
nector and trans-
mission connector.
7
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Jack-up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain the ATF until it cools down.
6) Remove the oil pan, and disconnect the
control valve body connector.
7) Measure the resistance between chassis
ground and control valve body connector.
Connector & terminal
(T11) No. 10 — Chassis ground:
(T10) No. 9 — Chassis ground:
Is the resistance more than 1
M
Ω?
Replace the con-
trol valve body.
<Ref. to 5AT-58,
Control Valve
Body.>
Repair the short
circuit of harness
between control
valve body con-
nector and trans-
mission connector.
Step
Check
Yes
No